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<head>
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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="root"></div>
    <script src="./vue3基础源码/vue3.js"></script>
    <script>
        const app = Vue.createApp({
            data(){
                return {
                    // box_data:true,
                    box_data_show:true,
                    box_else:true
                }
            },
            template:`
                <div v-if="box_else">abc</div>
                <div v-else-if="box_else">qwe</div>
                <div v-else>jkl</div>
                <div v-show="box_data_show">123</div>
            `
        });
        app.mount("#root");
    </script>
</body>
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